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Easy 7-Day Sourdough Starter from Scratch Guide for Perfect Homemade Bread

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This guide provides a simple, step-by-step method to create a lively sourdough starter using just flour and water over 7 days, perfect for beginners and seasoned bakers alike.

Ingredients

  • Unbleached all-purpose flour (about 120 grams or 1 cup per feeding)
  • Filtered or bottled water (120 ml or about ½ cup per feeding), room temperature
  • Optional: Whole wheat or rye flour for occasional feedings
  • Optional: Rubber band or piece of tape to mark starter rise

Instructions

  1. Day 1: Mix ½ cup (60 g) unbleached all-purpose flour with ½ cup (120 ml) filtered room-temperature water in a clean glass jar. Stir until no dry flour remains. Cover loosely and leave at room temperature for 24 hours.
  2. Day 2: Check for bubbles. Stir once to incorporate air. Discard half the starter (about ½ cup), then feed with ½ cup (60 g) flour and ½ cup (120 ml) water. Stir, cover, and rest for 24 hours.
  3. Day 3: Look for activity such as bubbles and tangy smell. Repeat discard and feeding process from Day 2. If kitchen is cool, allow more time but feed daily.
  4. Day 4: If starter is very bubbly and doubling in size within 6-8 hours, feed twice daily (morning and night) by discarding half and adding equal parts flour and water.
  5. Day 5: Check consistency; starter should rise and fall predictably and smell pleasantly sour. Adjust feeding amounts if too liquid or stiff.
  6. Day 6: Perform float test by dropping a spoonful of starter in water; if it floats, it is ready to bake with. If not, continue feeding.
  7. Day 7: Starter is ready when it consistently doubles in size within 4-6 hours and passes the float test. Use for baking your favorite bread recipes.

Notes

Keep starter at room temperature (70-75°F). Use filtered or bottled water to avoid chlorine. Feed starter consistently at same times daily. Discard half before feeding to maintain acidity balance. Avoid metal utensils. If kitchen is cold, place jar in a warm spot. Do not seal jar tightly; allow airflow.

Nutrition

Keywords: sourdough starter, homemade bread, bread starter, sourdough, baking, fermentation, wild yeast, beginner bread recipe